Pick-up box carrying assembly



Aug. 25, 1936.

PICK-UP BOX CARRYING. ASSEMBLY Filed Jan. 21, 1935 6 Jay" .1. I '14 1712 Y if y W 13 12 4 V 16 15" r' 3 1 llll. 7 1

D fl Z\ Z Wmmumn HIIIHIQ z I 2 r lllllllllllIlllllllllll BY TTTTTT EY J.A. VOLK 2,052,506 I Patented Aug. 25, 1936 UNITED STATES PICK-UP BOXCARRYING ASSEMBLY 7 Joseph Anthony Volk, St. Louis, Mo.

Application January 21, 1935, Serial No. 2,776

2 Claims.

This invention relates to sound reproducing instruments of the typeemploying a pickup box or the like for use with phonograph records, andits general object is to provide an assembly for carrying the box sothat in its movement radially of the record, its longitudinal axis willbe always disposed substantially in a vertical plane tangent to thegroove of a record, thereby preventing lateral pull of the needle orstylus to the sides of the groove, and so as to cause the needle toengage the groove in a positive and uniform manner, substantiallythroughout the entire radius of the grooved surface, which results inbetter reproduction and prevents premature wear of the groove andneedle.

A further object of the invention is to provide a pickup box assemblythat retains the needle of the box in the groove of the record withminimum pressure which also adds materially in producing betterreproduction and preventing wear.

Another object of the invention is to provide a pickup assembly of thecharacter set forth, that can be easily and expeditiously mounted orapplied to the mounting tables of all phonograph cabinets and the like,is simple in construction, inexpensive to manufacture and extremelyefficient in operation and service.

This invention also consists in certain other features of constructionand in the combination and arrangement of the several parts, to behereinafter fully described, illustrated in the accompanying drawing andspecifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to theaccompanying drawing wherein like characters denote like orcorresponding parts throughout the several views, and in which:

Figure 1 is a side view of my device, partly in section, and illustratesthe same in use.

Figure 2 is a top plan view of the device in use.

Referring to the drawing in detail, the letter A indicates the mountingtable of a phonograph cabinet or the like, and B the turntable of theusual construction.

My device includes a supporting frame that is provided with a base Iwhich as shown has openings arranged therein to receive screws 2 orother like means for securing the supporting frame to the mounting tableA as best shown in Figure 1. Formed on the base and rising therefrom isan upright 3 which has formed thereon and extending at right angles fromthe upper ends thereof parallel arranged bearing blocks 4, the latterhaving ball recesses disposed in the undersides thereof to accommodatebearing members 5. The bearing blocks have openings extendingtherethrough and centrally of the recesses to receive shafts B that havetheir lower ends mounted in ball recesses or chambers 1 formed in thebase I. The lower ends of the shafts 6 are recessed to receive bearingmembers 8 disposed in the chambers I, as best shown in Figure l.

The shafts have secured thereto for vertical movement thereon, collars 9that are held in adjusted position, through the instrumentality of setscrews l0, and against the bearing members 5, therefore it will beapparent that the collars can be adjusted to compensate for wear.

Each of the shafts have formed on the upper ends thereof one of the endsof horizontal arms ll, while the opposite ends of these arms II arereduced as at l2 to receive the reduced ends l3 of a cross bar I4. Itwill be noted from Figure 1 that the cross bar 14 has its reduced endsl3 pivotally mounted on the reduced ends of the arms ll through theinstrumentality of screw pins [5.

The pickup box which is indicated by the letter C has secured to therear face thereof a bracket l6 that is provided with a bore extendingtransversely therethrough to receive the cross bar M, in a mannerwhereby the box is pivotally associated with the bar [4, and the bracketIt has formed thereon a counterweight I! to balance the box as will beapparent.

The bracket I6 is held centrally of the cross bar I4 by collars l8 whichengage the sides of the bracket l6 and the collars are adjustablysecured to the bar [4 by set screws 19.

The box C is provided with the usual opening to accommodate a needle orstylus D which is adjustably secured thereto by a set screw as shown.

From the above description and disclosure in the drawing, it will beobvious that I have provided an assembly for carrying the pickup box ina manner to prevent premature wear of the needle and groove of a record,as the assembly causes the needle to engage the groove in a positive anduniform manner, in that lateral pull to the sides of the groove will bepractically eliminated, and this feature coupled with the fact that theneedle is retained in the groove with minimum pressure, will result inreproduction far superior to that obtained by the pickup arms now ingeneral use.

It is thought from the foregoing description that the advantages andnovel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the constructionand in the combination and arrangement of the several parts, providedthat such changes fall within the scope of the appended claims.

What I claim is:

1. An assembly for carrying a pickup box and comprising a supportingframe, shafts journaled in the frame, an arm for each shaft and havingone of its. ends fixed thereto, means bridging and pivotally secured tothe opposite ends of said arms and cooperating with the shafts forholding the arms in parallel relation with respect to each other, abracket fixed to the pickup arm and in cluding counterbalancing meansfor the latter and rising from the bracket, said bracket being slidablyand pivotally secured to the bridging means, and collars adjustablysecured to the bridging means and engageable with the oppo= site sidesof the bracket to hold the latteradiustably secured on the bridgingmeans.

2. An assembly for carrying a. pickup box and comprising a supportingframe including a base having a pair of recesses therein, an uprightformed with and rising from the base, bearing blocks formed on the upperend of the upright and overhanging the base, with a pair of recessestherein aligned with the recesses of the base, shafts journaled in thebearing blocks and recesses of the base respectively, antifriction meansfor said shafts and disposed in the recesses, an arm for each shaft andhaving one of the ends thereof fixed thereto, a cross bar pivotallysecured and bridging the opposite ends of the arms and cooperating withthe supporting frame for securing the arms in parallel relation withrespect to each other, means secured to the box and slidably andpivotally mounted on the cross bar, adjustable means to hold the boxmounting means against sliding movement, and counterbalancing means forthe box.

JOSEPH ANTHONY VOLK.

